Method for preparing fertilizer through two-phase straw fermentation

A technology for preparing fertilizers and straws, applied in the preparation of organic fertilizers, organic fertilizers, fertilizer mixtures, etc., to achieve the effects of improving nutrients, excellent fertilizer efficiency, and reducing engineering costs

Inactive Publication Date: 2018-11-23
安徽养地生态科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] According to the deficiencies in the prior art above, the technical problem to be solved by the present invention is to propose a method for preparing fertilizer by two-phase fermentation of straw, by adopting the method of combining anaerobic fermentation-aerobic fermentation-anaerobic fermentation, the existing There is a lack of research on two-phase fermentation of straw in technology

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A method for preparing fertilizer by straw two-phase fermentation, the method comprising straw pretreatment, two-phase fermentation, and fertilizer preparation, the specific steps are as follows:

[0024] 1) Straw pretreatment: crush corn, rice, and wheat agricultural straw into straw particles with a particle size of 7 mm, and add N-methylmorpholine-N-oxide monohydrate with a mass ratio of 1:1 to the straw particles The mixed concentration of the compound and 1-allyl-3-methylimidazolium chloride is 20% imidazole saline solution and activated sludge for stirring and mixing, the addition amount of imidazole saline solution is 30% of the straw grain mass, The amount of addition is 15% of the mass of the straw grains, and the uniformly mixed material is moistened at a temperature of 90°C for 20 hours. During the moistening process, the mixed material is sprayed to ensure that the humidity of the mixed material is 45%. After that, it is crushed into a particle size of 80 me...

Embodiment 2

[0028] This example is the same as Example 1, except that the straw pretreatment in step (1) in this example: corn, rice, and wheat crop straws are crushed into straw grains with a particle diameter of 7mm, and the straw grains are added by mass The mixing concentration of N-methylmorpholine-N-oxidized monohydrate and 1-allyl-3-methylimidazolium chloride with a ratio of 0.5:1 is 25% imidazole saline solution and activated sludge for stirring and mixing, The amount of imidazole saline solution added is 25% of the mass of straw granules, the amount of activated sludge added is 20% of the mass of straw granules, and the uniformly mixed materials are moistened at a temperature of 95° C. for 26 hours.

Embodiment 3

[0030] This embodiment is the same as Example 1, except that the two-phase fermentation in step (2) in this embodiment: the mixture is placed in the fermentation tank, the humidity and water content of the mixture are adjusted to 40%, the pH is 8, and the fermentation is sealed. The tank is subjected to mesophilic anaerobic fermentation for 10 days, and the temperature is controlled at 37°C. During the anaerobic fermentation process, the first 6 days are not aerated, and aeration is performed every other day from the 7th day until the end. Mesophilic anaerobic fermentation is beneficial to The degradation of organic matter is converted into organic acids, which are dehydrated and condensed under the action of heat and pressure to generate humic acid, which improves the nutrient content of organic fertilizers, and does not need to provide external heat sources, energy saving and emission reduction, and then intermittent stirring is used in the fermentation tank Air is blown in b...

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PUM

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Abstract

The invention discloses a method for preparing fertilizer through two-phase straw fermentation, and belongs to the field of organic fertilizer processing. The method includes the steps of straw pretreatment, two-phase fermentation and fertilizer preparation. The method has the advantages that an anaerobic fermentation-aerobic fermentation-anaerobic fermentation combination is adopted; the primaryanaerobic fermentation is conducive to decomposition of hemicellulose and cellulose to destroy the internal structure of straw, providing a basis for subsequent aerobic fermentation; the followed aerobic fermentation decomposes undecomposed lignin and organic substances hardly to decompose into organic acids, specifically stable organic substances such as humic acid and amino acid; the secondary anaerobic fermentation makes materials thinner; by the combined process, engineering costs are reduced, and the prepared organic fertilizer has excellent fertilizer efficiency.

Description

technical field [0001] The invention belongs to the technical field of organic fertilizer processing, and in particular relates to a method for preparing fertilizer by straw two-phase fermentation. Background technique [0002] Organic fertilizers are mainly derived from plants and (or) animals, and are applied to the soil to provide plant nutrition as carbon-containing materials whose main function is. It is processed from biomass, animal and plant waste, and plant residues, eliminating toxic and harmful substances, and rich in a large number of beneficial substances, including: a variety of organic acids, peptides, and rich nutrients including nitrogen, phosphorus, and potassium. nutritional elements. It can not only provide comprehensive nutrition for crops, but also has long fertilizer effect, can increase and renew soil organic matter, promote microbial reproduction, improve soil physical and chemical properties and biological activity, and is the main nutrient for gre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/00C05G3/04C05F17/00C05G3/80
CPCC05D9/00C05F17/50C05G3/80C05G5/12C05D9/02C05F7/00C05F11/00C05F11/02C05G3/00Y02W30/40
Inventor 高亚飞
Owner 安徽养地生态科技有限公司
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